Pieree eugene chollet



@uiten tstes lsteat @fitta PIERRE CI-IOLLET, 0F NEW YORK, N. Y.

Letters Patent No. 64,407, dated fag/ 7, 1867.

IMPROVEMENT IN PIANO-FORTES.

TO ALL WIIOM IT MAY CONOERN:

Be it known that I, PIERRE EUGENE GHOLLET, of the city, county, andState of New York, have invented, madeJ and applied to use certain newand useful improvements in Stringing the Strings of Piano-Fortes, by theuse of whiehinvcntion parties unaccustomed to tuning piano-fortes mayreadily tune the same; and I do declare the following to be a full,clear, and correct description of the same, reference being had to theaccompanying drawings, making part of this specification, and theletters of reference marked thereon, in which- Figure 1 is a sideelevation showing my improvements. Y

Figure 2, a side elevation showing my improvements.

In the drawings, like parts ofthe invention are point-ed out by the sameletters of reference.

The nature of the invention consists in new and useful improvements inStringing the strings of piano-fortes, so that any one uuaccustomed totune a piano-forte can readilyT and correctly tune the same.

Io enable others skilled iu the arts to make and use the invention, Iwill proceed to describe the same.

A shows the bridge of the piano-forte, and E B2 are two strings of thesame. These strings may be passed over a screw, a, secured in thepiano-forte, and their opposite ends are passed through the eyes in themetal support C inserted in the instrument at the proper point. Theseeyes, when the support C is inserted in the instrument, are on a linewith the top of the bridge A, so that the strings B B2 shall be the sameheight their entire length. I) shows a support inserted in theinstrument, which support has a portion of its face cut away, forming aslot to receive the toc e of the lever E. E shows a lever, provided withthe toe e resting in the slot of the support D, and also with the hookf.This lever E has its upper surface slotted near its front end, as at g,to receive the toe It of a second lever, II. H shows a second lever,provided with the toc 7L, and also with the upright I, in which areinserted the hooks J J, to which the ends of the strings B B2 are held.These hooks JJ are threaded, and the strings B EL may be tightened bytightening the nuts jj upon the threaded hooks J J, the nuts bearingupon the back of the upright I.' The second lever II has one end slottedto receive the screw K, which also passes through the lever E, which isprovided with theoponing for such purpose. Upon this screw K is thenotched head Il. Upon the support M, inserted in the instrument,directly below the rear of the, lever E, is attached the pointer N, soheld that it may more freely forward and backward when desired. Thispointer N has a portion of itself turned down, as at n, to form a footupon which the rear end of the lever E may impingo. Attached to thesupport M is the spring O, one end of which bears against the under sideofthe foot n. I? shows a standard, through which the screw Q passes, andS is a spiral spring, through which the screw Q operates, one end ofsaid spring being attached to the hookfupon the lever E.

Operation.

My improvement being thus constructed, the operation is as follows: Thestrings B :B2 are first tuned by a competent party, by means of thethreaded hooks and nuts, the nuts upon the threaded hooks being loosenedor tightened, as may be requisite. When the strings are in tune thepointer N falls into one of the notches of the notched head.- When fromthe change of temperature or other causes the strings become out oftune, the spring S becomes relaxed, releasing the levers E and II andthrowing back the pointer -N from contact with the notched he'ad. 'I'oplace the strings in tune, the notched head is turned, causing thelevers E and H to approach each other, and as the lower lever is raisedthe spring O is relaxed until the pointer N (against the foot of whichthe spring O operates) is thrown forward into one of the notches uponthe notched head, when the strings will be found to be in tune. Theadvantages of the present invention are found in the facility andcclerity with which any one, even a child, though no musician, can tunea piano-forte. v

IIaving thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

In combination with the levers E and II, the latter of which is providedwith the hooks or their equivalents, I claim the use or employment ofthenotched head, screw, and pointer, for the purposes set forth.

PIERRE EUGENE CHOLLET.

Witnesses:

WILLIAM T. WnLLnu, A. SIDNEY Donne.

